The difference between brand perception and brand awareness needs to be more clear in the minds of the consumers. The broad objective of this research is to investigate the impact of brand perception and brand awareness on consumer buying behavior from the perspective of cosmetic companies, focusing especially on the consumer purchasing decision aspect. The paper will help to understand how marketing strategies can uplift the brand perception in the minds of consumers. The study aims to find out that the major decision taken by the consumer while purchasing the product is based on Brand perception or on Brand awareness. It even helps to understand that the purchasing decision taken by the consumer on the bases of Brand perception related to the product might change once the consumer is aware about the brand. As it is not necessary that the perception of the brand may be the reality of the brand, which might have an impact on the purchasing decision of the consumer. The marketing strategy creates a Brand perception within the minds of the buyers but doesn't provide complete knowledge about the brand so that the consumer is aware of the brand. Social media plays an important role in influencing purchasing decisions. As the brand now has given a position to the brand ambassadors on social media as ‘Social Influencers’. This paper is an outcome of both primary and secondary data which seeks to investigate one of the major factors that influence the purchasing decision of the consumer.